Design an Analog Universal Input Signal for ADC

The freelancer has to design an Analog Universal Input for an A/D converter, of minimum 16-bits resolution. This analog circuit must have the following features:

- Programmable input: Pt100 RTD and thermocouples type J, K, T, E, N, R, S, B.

- Two-wire loop powered 4-20 mA output

- Voltage input of 0-10, 0-5VDC

- Linearized output and cold junction compensation for thermocouples.

- 2 or 3-wire Pt100 with linearization.

- Isolation: 1500 VDC.

- Programmable working range by Bluetooth with App on Android/iOS

- Manual zero (offset) adjustment

- Accuracy: ±0.2% full scale for Pt100 and 0.3% max. of FS for thermocouples

- Temperature effect: 0.003% SPAN/°C

- Working temperature: -40 to +85 °C

- Programmable burnout upscale or downscale sensor failure protection

Any improvement in the features are welcome!

Skills: Android, Circuit Design, Electrical Engineering, Electronics, PCB Layout

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About the Employer:
( 58 reviews ) Netanya, Israel

Project ID: #17959295

Awarded to:


Hello! Thank you for inviting me to offer. I made a design for reading five K-thermocupes and reading the temp value in a PC by Bluetooth. I've used a MAX31855 to read the TC but is a 14 bit ADC. I suggest using More

$40 USD in 45 days
(9 Reviews)

9 freelancers are bidding on average $186 for this job

$150 USD in 3 days
(12 Reviews)

Hi, we can use smart ADC devices from analog Devices for this project. it includes microcontroller with cortex m series. so, we don't need another external microcontroller, just add Bluetooth module. and we can popul More

$200 USD in 5 days
(21 Reviews)

Hello, i have read the details provided..please contact me to discuss more on the project deadline and some other few things

$150 USD in 3 days
(5 Reviews)

Hello and Good day I can quickly design your Analog Universal Input Signal for ADC according to all the specifications that you have provided. 1. Please tell what is the min-max analog voltage range that you req More

$500 USD in 15 days
(1 Review)
$35 USD in 2 days
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I am a future engineer in embedded system (electrical engineering ) I worked on a lot of project using electronique and programing so I am the best one for that project

$111 USD in 3 days
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Good day I am electronics engineer graduate. We have a project in our college related to your job posted. I can help you with that. Relevant Skills and Experience Proteus and programming

$222 USD in 8 days
(0 Reviews)

Thank for the invitation Do you want just the design (schematics) ? And you need that this multipurpose circuit is controllable from a Bluetooth app ?

$155 USD in 3 days
(0 Reviews)